T08 · Insecure Dependencies
Warning
- Location
SKILL.md:106- Finding
Unpinned Third-Party Dependencies Permit Supply-Chain Substitution
- Content
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Vulnerability Details
File Location:
SKILL.md:106-112
Vulnerability Type: Unpinned and unverified Python dependencies
Risk Level: MediumVulnerable Code
bash ## Dependencies ```bash # Primary (recommended) pip install yfinance # Fallback (if yfinance unavailable) pip install requeststext ### Technical Analysis The installation instructions retrieve the latest available versions of `yfinance`, `requests`, and their transitive dependencies without version constraints, package hashes, a lockfile, or index restrictions. Consequently, the code installed and subsequently imported can differ from the version reviewed during this audit. Python package installation and import may execute package-controlled code. A compromised upstream release, malicious dependency substitution, or unreviewed future release could therefore introduce arbitrary behavior into the Skill's execution environment. The same unpinned `yfinance` installation guidance also appears in `references/api-sources.md:21`. ### Attack Path 1. An attacker compromises an upstream package or one of its transitive dependencies, or publishes a malicious release through a supply-chain attack. 2. A user follows the documented `pip install yfinance` or `pip install requests` command. 3. `pip` resolves and installs the attacker-controlled release because no reviewed version or hash is required. 4. Malicious code executes during package installation or when `quote.py` imports the package. 5. The payload operates with the privileges of the user running `pip` or the Skill. ### Impact Assessment Successful exploitation may permit arbitrary code execution under the installing user's account. The resulting access may include reading or changing user-accessible files, accessing environment variables and credentials available to the process, making network requests, and altering the Skill's quote results. The exact scope is bounded by th ...[truncated 62 chars]- Remediation
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Remediation Suggestions
- Pin every direct dependency to a reviewed version.
- Maintain a lockfile that records all resolved transitive dependency versions.
- Require package hashes, such as through
pip install --require-hashes -r requirements.txt. - Configure an explicit trusted package index and disable unintended extra indexes.
- Install dependencies in an isolated virtual environment or restricted container rather than a privileged system environment.
- Add automated dependency vulnerability and integrity scanning.
- Review and deliberately update pinned versions on a controlled schedule.
- Replace all unpinned installation examples, including the example in
references/api-sources.md, with the hardened installation procedure.